import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Roles from '../components/power/Roles.vue'
import Rights from '../components/power/Rights.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import List from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'
Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  {
    path: '/home', component: Home,
    redirect: '/welcome',
    children: [
      { path: '/welcome', component: Welcome },
      { path: '/users', component: Users },
      { path: '/rights', component: Rights },
      { path: '/roles', component: Roles },
      { path: '/categories', component: Cate },
      { path: '/params', component: Params },
      { path: '/goods', component: List },
      { path: '/goods/add', component: Add },
      { path: '/orders', component: Order },
      { path: '/reports', component: Report }
    ]
  }
]



const router = new VueRouter({
  routes
})

// 为了防止有人直接输入地址 绕开登录 我们需要路由的导航守卫 来验证请求是否可以访问
router.beforeEach((to, from, next) => {
  // to from 是两个路由信息对象 next 是放行的方法
  // 如果是要访问login 直接放行
  if (to.path == '/login') {
    return next()
  }
  // 先去获取token 如果有token表明已经登录过了 没有则表示没有登录
  let token = window.sessionStorage.getItem('token')

  if (!token) {
    return next('/login')
  }
  return next()
})


export default router
